chore: add ecosystem configuration for on-site survey application

- Introduced a new configuration file for managing the on-site survey application.
- Defined application settings including script execution and instance management.

dev.ecosystem.comfig.js

@@ -0,0 +1,10 @@
+module.exports = {
+  apps: [
+    {
+      name: 'on-site-survey',
+      script: 'node_modules/next/dist/bin/next',
+      instances: 1,
+      exec_mode: 'fork',
+    },
+  ],
+}